November 21, 2012 5:38
Poltergeists, witches and ghosts — not only heroes scare stories. The scientists in charge of monitoring the oceans, are aware of the considerable number of mysterious sounds that still do not have an explanation — at least sufficiently accurate.
These sounds, which often are assigned identification catchy name, recorded with hydrophones located in the Office of the National Oceanic and Atmospheric Administration USA (NOAA). Here is a list of the six most mysterious sounds that have ever been recorded in the sea, and some assumptions about what might be the cause of them.
Definitely not the most mysterious and frightening name but a mystery around the sound has not been disclosed so far. In 1997, NOAA hydrophones recorded one of the biggest ever recorded sounds off the coast of South America: Bulka was recorded by two hydrophones, spaced at 4800 kilometers.
Bulka to some extent mimics the sounds of marine animals, but the volume is too large for any known scientific substance. If your imagination leads you too far, you know — you're not alone: many of those who heard him jokingly tied him with the name of Cthulhu fiction osminogo-like monster invented by writer HP Lovecraft in 1928.
But aside from the version with deep monsters, NOAA believes that gurgling — the sound of a ruptured giant iceberg. Such "ledotryaseniya" before being written to the Scottish Sea and they sound very similar to the gurgling of 1997. If the source of the sound is really served the iceberg, according to NOAA, he was drifting between the Bransfield Strait and the Ross Sea in Antarctica, or possibly near Cape Edar in East Antarctica.
This strange sound, more reminiscent of cooing and moaning, was recorded March 1, 1999. He was recorded eastern equatorial autonomous hydrophone array in the Pacific.
Like Bulka, Julia is most likely associated with the ice. In this case, NOAA researchers suggest that their hydrophones captured the sound of the giant Antarctic iceberg crashed into the ocean floor.
To the human ear sounds like a comb-over ambulance siren or perhaps howl extraterrestrial beings. He periodically fixed hydrophones since 1991, reaching the highest rate in the spring and fall. Sound source, apparently, is a zone of volcanic activity on the ocean floor, but scientists are still struggling with the mystery of its origin.
Delay — the noise, recorded May 19, 1997, received its name from the fact that its frequency slowed for seven minutes. NOAA scientists have found that the sound is coming from the area of the Antarctic Peninsula, leading them to suggest that slowing — the result of hitting floating icebergs on the ocean floor and grinding as they brake. The sound was recorded sensors, remote from each other for five thousand kilometers.
The train goes, as one might expect based on the name — like the sound of wheels on the rails. Recorded in 1997, the train — it's even buzz that supposedly comes from the area of the Ross Sea in Antaktike. The most likely suspects? Iceberg, pulling her keel on the ocean floor.
Whistle whistle sound more like a boiling kettle than any tune, but it does not make it less mysterious. Recorded in July 1997, the whistle was recorded by a single hydrophone, which makes it impossible to attempt to determine the location of its source. However, according to NOAA similar sounds come from areas of eruptions of underwater volcanoes. The possibility exists that whistle, unlike Julia, deceleration and other mysterious sounds, is caused by the fire, not ice — but no one would blame you if you still want to write it on awakening Cthulhu.